About 506 million years ago, a strange marine creature whose body so resembled a science-fiction spacecraft that it has been dubbed 'the mothership' thrived in tropical seas, menacing prey on the ocean floor in what is now Canada as one of Earth's largest predators to that point in time.
Accelerating Martian and Lunar Science through SpaceX Starship Missions (NASA)
There Really Is Such a Thing as Too Much 'Free Time', According to Science